>a very performant programme You might need to define what is "very performant". I come from C++ performance work side in games. Typical C++ is ~10 times slow

>a very performant programme You might need to define what is "very performant". I come from C++ performance work side in games. Typical C++ is ~10 times slower than optimized C++. And optimized C++ is sometimes ~2-10 times slower than what game hardware can do. What limits many projects is that cost of going to 'next level' of performance is also nonlinear. Where is on this scale Rust code written by new to the language?